add scaledimagecache
BUG=
Review URL: https://codereview.chromium.org/20005003
git-svn-id: http://skia.googlecode.com/svn/trunk@10286 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/bench/ImageCacheBench.cpp b/bench/ImageCacheBench.cpp
new file mode 100644
index 0000000..3a22a47
--- /dev/null
+++ b/bench/ImageCacheBench.cpp
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkBenchmark.h"
+#include "SkScaledImageCache.h"
+
+class ImageCacheBench : public SkBenchmark {
+ SkScaledImageCache fCache;
+ SkBitmap fBM;
+
+ enum {
+ N = SkBENCHLOOP(1000),
+ DIM = 1,
+ CACHE_COUNT = 500
+ };
+public:
+ ImageCacheBench(void* param) : INHERITED(param) , fCache(CACHE_COUNT * 100) {
+ fBM.setConfig(SkBitmap::kARGB_8888_Config, DIM, DIM);
+ fBM.allocPixels();
+ }
+
+ void populateCache() {
+ SkScalar scale = 1;
+ for (int i = 0; i < CACHE_COUNT; ++i) {
+ SkBitmap tmp;
+ tmp.setConfig(SkBitmap::kARGB_8888_Config, 1, 1);
+ tmp.allocPixels();
+ fCache.unlock(fCache.addAndLock(fBM, scale, scale, tmp));
+ scale += 1;
+ }
+ }
+
+protected:
+ virtual const char* onGetName() SK_OVERRIDE {
+ return "imagecache";
+ }
+
+ virtual void onDraw(SkCanvas*) SK_OVERRIDE {
+ if (fCache.getBytesUsed() == 0) {
+ this->populateCache();
+ }
+
+ SkBitmap tmp;
+ // search for a miss (-1 scale)
+ for (int i = 0; i < N; ++i) {
+ (void)fCache.findAndLock(fBM, -1, -1, &tmp);
+ }
+ }
+
+private:
+ typedef SkBenchmark INHERITED;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+DEF_BENCH( return new ImageCacheBench(p); )